Hello! I am making a spaceship game. I have maked so far that when the user click on the arrows, the stars are moving according to the direction. There is also the X & Y (In the Galaxy, not in the screen) of the spaceship. So how can I put another spaceship, enemy spaceship, that will move also according to the direction, and it will have also (galaxy) x & Y? I hope you have understanded what my problem is, if not, please tell me what you didn''t understanded.... Thanks!!!

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Original post by BenB

Hello!
I am making a spaceship game. I have maked so far that when the user click on the arrows, the stars are moving according to the direction. There is also the X & Y (In the Galaxy, not in the screen) of the spaceship. So how can I put another spaceship, enemy spaceship, that will move also according to the direction, and it will have also (galaxy) x & Y?
I hope you have understanded what my problem is, if not, please tell me what you didn''t understanded....
Thanks!!!

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I''m not sure what exactly yo uare saying, but if you are talking about making an enemy AI of a spaceship that just goes straight towards the users spaceship, try making the enemy spaceship (EX & EY) move according to the users spaceship (UX & UY) so if you were coding in C++, a very simple thing would be

while(EY < UY)
EY = EY + 1 (or 2 or whatever, depends on speed)
while(EY > UY)
EY = EY - 1

and im assuming you always have the spaceship coming towards the users ship in a side-scrolling fashion so you wouldnt need to change the EX in anyway since it will have a set speed hope that helps if it doesnt, and i didnt even come close to what you were tlaking about, email me


If I only had a nickle for every problem I''ve had, I wouldn''t have anymore problems, but then I guess I wouldn''t have anymore nickles either...

Well, all I want to do is very simple, I just didn''t explain it good.
All I want is the enemy not to move, and stay in his place forever(of course I will change it later, this is only for testing). So if I''m near him, for example, and I move right, he need to move left (on the screen) right? And when I move more right, I will not see him rihgt? That what I want to do!
Thank you...

You will want to render the enemy at a position relative to your own ship. If your ship is at (X,Y) and the enemies is at (EX,EY) in the world, you''ll want to take the difference (EX-X, EY-Y) and then add the position of your ship on the screen (CX,CY) then you''ll have the enemies coordinates on the screen (EX-X+CX,EY-Y+CY).